Basic insulation _______

[Louicardist23]

Is double insulation cable necessary such as twin and earth if under automatic disconnection of supply it states that basic protection can be achieved by basic insulation only.
Thanks

 

[telectrix]

strange question.T/E is not double insulation.it is insulated and sheathed.

 

[Deleted member 9648]

I think you are referring to double or reinforced insulation which is a means of both basic and fault protection. T/E cable is not classed as double or reinforced insulation.

 

[Pete999]

Is double insulation cable necessary such as twin and earth if under automatic disconnection of supply it states that basic protection can be achieved by basic insulation only.
Thanks

No such Animal as Double insulated cable Mate, it's classed as insulated with a mechanical protective sheath.

 

[Deleted member 26818]

The reason why T&E is not deemed as double insulated, is because there is only one layer of insulation between the CPC and anything else.
Insulated and sheathed singles are deemed as being double insulated.

 

[Pete999]

No such Animal as Double insulated cable Mate, it's classed as insulated with a mechanical protective sheath.

It does not carry the Double insulated icon, ergo it's not double insulated.

 

[Deleted member 26818]

Wiring is not required to carry the Double insulated icon.

 

[Louicardist23]

Ah Thanks, that clears a few things up, I should have just asked is twin and earth classed as double insulated.

 

[Louicardist23]

The reason why T&E is not deemed as double insulated, is because there is only one layer of insulation between the CPC and anything else.
Insulated and sheathed singles are deemed as being double insulated.

Ok just to get this straight, Are you saying then that theoretically an installation could be wiring in insulated sheathed singles (double insulated) without the use of ADOS?
Thanks again

 

[DPG]

No.

 

[Rpa07]

Take photos to share with us as you do it and also share the cost of the install. Nice one.

Ok just to get this straight, Are you saying then that theoretically an installation could be wiring in insulated sheathed singles (double insulated) without the use of ADOS?
Thanks again

 

[johnduffell]

theoretically an installation could be wiring in insulated sheathed singles (double insulated) without the use of ADOS

singles are insulated and sheathed not double insulated, but even if they were you would need some means of protection from electric shock through faults at the terminations/accessories, not just the wiring itself. you would also need to run a CPC to all points in or with the wiring system as well.

 

[Pete999]

Wiring is not required to carry the Double insulated icon.

I know but it is not double insulated

 

[Pete999]

Wiring is not required to carry the Double insulated icon.

Yes I agree but anything being deemed as double insulated should carry said logo.

 

[gazdkw82]

Triple insulated?

 

[Edtwozeronine]

I recall basic protection being something to do with college work, like all fuse boards being boxed in being basic protection Vs mechanical protection (maybe) the locks on the fuse boards themselves to try and prevent accident, injury or death from people meddling with the things inside. I think PPE was classed as part of basic protection as well, I'm sure some genius can remind me what I'm rambling on about.

 

[johnduffell]

I recall basic protection being something to do with college work, like all fuse boards being boxed in being basic protection Vs mechanical protection (maybe) the locks on the fuse boards themselves to try and prevent accident, injury or death from people meddling with the things inside. I think PPE was classed as part of basic protection as well, I'm sure some genius can remind me what I'm rambling on about.

IGave you an optimistic but I'll give it a go! Basic protection in bs7671 is the primary insulation or other protection against live parts contacting anything else including yourself.
True that 1000V gloves could perform that task, but it's not really part of the installation so I'm not sure it counts in the letter of the law

 

[gazdkw82]

Basic protection is insulation or a barrier to prevent contact with live parts